//
//  Offer_05.swift
//  LeetCode
//
//  Created by migu on 2020/9/11.
//  Copyright © 2020 LBB. All rights reserved.
//  请实现一个函数，把字符串 s 中的每个空格替换成"%20"。
//输入：s = "We are happy."
//输出："We%20are%20happy."
//0 <= s 的长度 <= 10000

import Foundation

class ReplaceSpace {
    func replaceSpace(_ s: String) -> String {
        var targetString = "";
        for i in s {
            if String(i).elementsEqual(" ") {
                targetString = targetString.appending("%20")
            } else {
                targetString = targetString.appending(String(i))
            }
        }
        return targetString
    }
}
